| Potomac to Troy (Michigan) | 396.89 mi (638.73 km) |
| Potomac to Troy (Missouri) | 739.15 mi (1,189.54 km) |
| Potomac to Troy (New York) | 316.02 mi (508.59 km) |
| Potomac to Troy (Ohio) | 380.93 mi (613.05 km) |
| Potomac to Truckee (California) | 2,280.39 mi (3,669.93 km) |
| Potomac to Trujillo Alto (Puerto Rico) | 1,576.79 mi (2,537.60 km) |
| Potomac to Trumbull Center (Connecticut) | 261.83 mi (421.37 km) |
| Potomac to Trussville (Alabama) | 640.43 mi (1,030.68 km) |
| Potomac to Tualatin (Oregon) | 2,341.98 mi (3,769.05 km) |
| Potomac to Tuckahoe (Virginia) | 100.81 mi (162.23 km) |
| Potomac to Tucker (Georgia) | 528.27 mi (850.17 km) |
| Potomac to Tucson (Arizona) | 1,939.25 mi (3,120.92 km) |
| Potomac to Tucson Estates (Arizona) | 1,951.84 mi (3,141.18 km) |
| Potomac to Tucson Mountains (Arizona) | 1,946.36 mi (3,132.36 km) |
| Potomac to Tukwila (Washington) | 2,308.16 mi (3,714.62 km) |
